NC Rule is killing me!!III NEED from anyone im losing my mind

[confidence101]

okay ive been dating this girl for 2 and a half yrs now. we rushed into the relationship but soon everything sorted itself out. we have so much fun and travel all the time ( i am a pilot) and we do almost everything together. after a smooth ride things started to get rocky. she is possessed with having my fb password and she goes thru my phone. we got into an argument and i wouldnt open the door for her and she keyed my car(a bmw) surprisingly i forgave her. from then on everything was good. now i made mistakes down the line but whenever i do she almost always go into silent mode hang up the phone and stop talkin to me. i used to beg her to talk to me/show up at her house. whenever shes mad at something she does not talk it out like i want to and stays silent its like she stays mad forever until i contact her. we go into a fight days b4 my bday and she walked out on me on my bday because she wasnt over it! i feel like such a punk when she acts like this because i dont want to lose her and almost always go running back to her. just 2 days ago she went into my fb and seen me talking to my brothers ex girlfriend(not knowing she was a good friend since she didnt ask) called me out on it and hung up the phone on me and started acting the way she usually would, not talking etc. i was so pissed. i broke up with her and been doing the NC RULE ever since. i have a weak moment every 15 minutes hust thinking of her but i know if i run back to her ill have to accept less than what i want from her and the same thing will happen again. i need closure advice. its been 2 days and im losing weight not eating and i cant sleep thru the night. i love this girl and everyone knows it i dont know how long i can keep up the nc rule what should i do?

[standtall]

Pilot with a BMW..you need to go slummin and pick up some skanks.

[confidence101]

Lol I tried always think about her